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Firefox no longer allows me to delay updates. Twice in 2 weeks, all of my cookies were blown away during the Firefox installations of 150.0.0 and 150.0.1. I have 8 Google Email Accounts - all forgotten and no longer accessible. The same is true for Yahoo finance; banks; and the myriad of other sites I use daily. I checked this morning, and all sites visited before 150.0.1 was installed (against my will), have zero cookies. Only sites visited after the installation of 150.0.1 have cookies. This is a tiny subset of cookies I rely on for daily use.

This makes Firefox useless. I can't spend hours trying to recover from untested software every two weeks. Until this is fixed, I have to switch to Chrome or Edge.

I'm running Windows 11 Pro..

After the last update on my desktop browser, my password was requested in order to "install a new helper tool." But it isn't accepting my password, even after I double checked what it was. And there's no Change Password link.

Since I can still access the Firefox browser on my iPhone, I thought of I'd change my password there and sync, but the new password isn't accepted either. Once a password isn't accepted, pressing cancel closes the app and it can't be reopened without a Force Quit first.

And 'round and 'round I go. How do I regain access to my desktop browser?

Thanks.

I have deployment firefox 148.0.2 version from SCCM, its on autoupdate. So, when it is pushing to machine and during launch its giving prompt " You have launched olderversion of firefox ". even though i have cleared old version or any other version and then pushed still giving same prompt. We need to remove this prompt from appearing to users. kindly suggest how to fix

I want to upload the current version of Firefox. However, the system Administrator (who is me) will mnot allow me to do so. How do I change settings to allow for the upload.

On 2026-04-15 from about 10:00 CDT on, I have not been able to update Nightly nor Firefox Developer Edition (Aurora). Both of them notify me that there is an update available, and when I click on Help -> About Firefox I get the usual panel that gives me the update ID to click on. Clicking on it tells me it's Downloading Update -- 0 bytes, and it never flashes the expected size of the update, never shows progress, and never completes. It seems to be acting as if the update server is out of commission.

I am running Firefox 149.0 (64-bit) on Windows 10. FF tells me that there is an update. I downloaded the update, and when I restart FF, it does not update. Version 149.0 is re-started, and Help --> About Firefox again tells me to restart to upgrade. I have tried the upgrade at least three times.

I wanted to try the new split screen feature. The guide says you need the latest version 149. When I check 'About Firefox' it says I have version 140.9 but it also says 'Firefox up-to-date'. Could you advise how I can update to latest version 149 please?

Since I upgraded from FF128-esr to FF140-esr I always get the "Firefox is being updated by another instance" This is really driving me crazy, as I checked / did / .... everything (and even more) I found on the internet related to that.

Nothing helps !

Creating and using a new default profile didn't help

Finally I ended up uninstalling FF completely (making sure no -zero- leftovers remained in ProgramFiles, AppData a.s.o.), and reinstalled FF140.7.0-esr freshly. After installation I started FF immediately with the created default profile (only existing one) --> SAME THING : "Firefox is being updated by another instance"

And this is really a FF140 thing, when I go back to FF128, on the same computer, same profiles, ...., the problem is gone.

I would like to know in detail what checks are really done by FF to decide to give that "Firefox is being updated by another instance"

I've been prompted to update Firefox. Multiple times I have downloaded the latest version, deleted the existing one, and installed the latest one. The next day I get the same prompt that I'm in need of an update.

When I see a message to update, I always do it immediately. A few weeks ago during an update the browser disappeared and wouldn't launch. I had no option but to uninstall with Revo Uninstaller Pro.

When I installed again, I signed in and immediately selected sync and all my bookmarks were recovered but also Chrome bookmarks which I want to keep separately. No complaint, I just deleted all those Chrome bookmarks.

Had to install all my Browser extensions. I have whitelisted a few websites to save cookies from those special websites like online Banking and got an auto popup message "You are using an untrusted browser"

I had to use my phone to get a code from the Bank to continue. I use Biometrics to log into my Bank accounts and also many other websites I have installed on my phone.

Then I got another message and email from the Banks verifying I have a Trusted Browser.

Firefox is my default browser on my phone and my Laptop and always will be. Thanks for allowing me to write this message. I want to confirm this is not a complaint.

cannot update browser. Currently using Linex Mint, #139, but latest is 150. As stated above, when I try to update, says browser update disabled by organization. Do not understand, I never authorized disabling browser updating.